Re: RFA: pause after sending S-records to ROM68K monitor

[Jim Blandy <jimb@zwingli.cygnus.com>]

I see what you're looking for.  That would certainly be better than
what I did --- under my system, if you had really high latency, you'd
have to lower the alleged baud rate some amount that varies based on
the size of your program... ugh...

I'll withdraw this patch for revisions.

Andrew Cagney <ac131313@cygnus.com> writes:
> I think you've got it half right  The time taken is something like:
> 
> 	size-of-pipe * amount-of-data + round-trip
> 
> (I don't have my AST networks book handy to don't trust this). 
> round-trip is loosely defined by remote_timeout.  As you note the baud 
> loosely defines the transfer-rate.  This is if we assume 100% efficiency :-)
> 
> In your case, it is probably more exactly defined as:
> 
> 	ABOVE - (current-time - start-time)
> 
> remember, if you are talking down a real serial port then the buffering 
> will be zero and you only want to wait for round-trip time.
> 
> Using this, i'd expect something like
> 
> 	if (remote_throughput (??better-name??) >= 0)
> 	  transfer_time = remote_throughput * sizeoftransfer;
> 	else
> 	  transfer_time = something made up from the baud-rate
> 
> 	timeout = transfer_time - (current_time - start_time) + remote_timeout